(1'R,3R,4R)-4-Acetoxy-3-(1'-tert-butyldimethylsilyloxyethyl)-2-azetidinone (3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsiloxy)ethyl]azetidin-2-one (3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-2-azetidinone (3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidinone 76855-69-1 [3R(1 inverted exclamation markaR,4R)]-(+)-4-Acetoxy-3-[1-(tert-butyldimethylsilyloxy)ethyl]-2-azetidinone [3R-[3|A(R*),4|A]]-4-(Acetyloxy)-3-[1-[[(1,1-dimethylethyl)dimethylsilyl]oxy]ethyl]-2-azetidinone CAS 76855-69-1

Purity 97%+In StockPharmaceutical Standards
CAS No.76855-69-1
Molecular FormulaC13H25NO4Si
Molecular Weight287.43 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(1'R,3R,4R)-4-Acetoxy-3-(1'-tert-butyldimethylsilyloxyethyl)-2-azetidinone (3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsiloxy)ethyl]azetidin-2-one (3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-2-azetidinone (3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidinone 76855-69-1 [3R(1 inverted exclamation markaR,4R)]-(+)-4-Acetoxy-3-[1-(tert-butyldimethylsilyloxy)ethyl]-2-azetidinone [3R-[3|A(R*),4|A]]-4-(Acetyloxy)-3-[1-[[(1,1-dimethylethyl)dimethylsilyl]oxy]ethyl]-2-azetidinone CAS 76855-69-1 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 287.43 g/mol gives (1'R,3R,4R)-4-Acetoxy-3-(1'-tert-butyldimethylsilyloxyethyl)-2-azetidinone (3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsiloxy)ethyl]azetidin-2-one (3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-2-azetidinone (3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidinone 76855-69-1 [3R(1 inverted exclamation markaR,4R)]-(+)-4-Acetoxy-3-[1-(tert-butyldimethylsilyloxy)ethyl]-2-azetidinone [3R-[3|A(R*),4|A]]-4-(Acetyloxy)-3-[1-[[(1,1-dimethylethyl)dimethylsilyl]oxy]ethyl]-2-azetidinone distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies (1'R,3R,4R)-4-Acetoxy-3-(1'-tert-butyldimethylsilyloxyethyl)-2-azetidinone (3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsiloxy)ethyl]azetidin-2-one (3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-2-azetidinone (3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidinone 76855-69-1 [3R(1 inverted exclamation markaR,4R)]-(+)-4-Acetoxy-3-[1-(tert-butyldimethylsilyloxy)ethyl]-2-azetidinone [3R-[3|A(R*),4|A]]-4-(Acetyloxy)-3-[1-[[(1,1-dimethylethyl)dimethylsilyl]oxy]ethyl]-2-azetidinone (CAS 76855-69-1), a certified reference material (molecular formula C13H25NO4Si, MW 287.43 g/mol) for analytical method development and quality control.

The molecular framework of (1'R,3R,4R)-4-Acetoxy-3-(1'-tert-butyldimethylsilyloxyethyl)-2-azetidinone (3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsiloxy)ethyl]azetidin-2-one (3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-2-azetidinone (3R,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidinone 76855-69-1 [3R(1 inverted exclamation markaR,4R)]-(+)-4-Acetoxy-3-[1-(tert-butyldimethylsilyloxy)ethyl]-2-azetidinone [3R-[3|A(R*),4|A]]-4-(Acetyloxy)-3-[1-[[(1,1-dimethylethyl)dimethylsilyl]oxy]ethyl]-2-azetidinone (C13H25NO4Si) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC13H25NO4Si
Molecular Weight287.43 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityLight-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1978
Nitrogen Atoms1

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